Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Chinese
G
o
o
g
l
e
|
Forvo
|
+
It is no use employing a polariscope to identify an opaque gemstone
jewl.
利用偏光镜鉴别不透明的宝石是没有用的
Add
|
Report an error
|
Get short URL
|
Language Selection Tips